Hand-lever attachment for steam-pumps



(No Model.)

W. D..HOOKER.

HANDLEVER ATTAGHMENT FOR STEAM PUMPS. No. 251,715.

Patented Jan. 3,1882.

In 11 5 mi 1: r

UNITE STATES PATENT OFFICE.

WILLIAM B. HOOKER, or OAKLAND, CALIFORNIA.

HAND-LEVER ATTACHMENT FOR STEAM-PUMPS.

SPECIFICATION forming part of Letters Patent No. 251,715, dated January 3, 1882. Application filed May 13, 1881. (Rio model.)

To all whom it may concern:

Be it known that I, WILLIAM D. HOOKER, of Oakland, Alameda county, California, have made and invented anew and useful Improvement in Hand-Lever Attachments for Steam- Pumps; and I do hereby declare that the following is a full, clear,and exact description of my said invention, reference being had to the accompanying drawings.

My invention relates to a means for connectin g an oscillating arm orlevcr with a rod having a movement in a right line, whereby at-he oscillation of one part will produce a reciprocation of the other part. It is intended more particularly for connecting a hand-lever with the piston-rod of a steam-pump.

It consists of a wrist-pin with a cross bar or rod projecting at right angles across its head and adapted to slide in bearings in the oscillating lever, and to oscillate in a socket provided in a block upon the piston-rod; and it consists, also, in connecting the block with the piston-rod by means of a groove in the rod and a projection on the inside of the hearing in the block, and in making the block in two parts or sections, so that it can either'be clamped and secured on the piston-rod or be loosened thereon and held from moving with the rod.

Referring to the accompanying drawings, Figure l is a side elevation, showing the lever attachment connected with' the piston -rod. Fig. 2 is a cross-section through line 00, Fig. 1 Fig. 3 is a section through line 3 Fig.1. Fig. 4 is a view of the right-angled wrist-pin. Fig. 5 is a view of the hollow screwed sleeve.

A may represent the parts in which are the bearings for the piston rod B.

At one sideof the frame A, I pivot an arm or lever, C, so that by applying power to the free end or handle of the lever it can be moved back and forth on the stud d as a center.

Upon thejpiston-rod B, I fix a'block, H, in which is a socket, ll, to receive the part G of the right-angle wi-istpin, and upon the side of the lever next to the piston-rod I provide hearings e c in lugs upon each side of the lineof the pin G, to receive and form guides and bearings for the cross pin or rod F of the wristpin. Thus by means of the bearings e e and the clamp H, with its socket, the right-angle pin is connected with and forms the attachment between the lever O and the piston-rod. The wrist-pin F G, being connected with and carried by the'lever O, and having also a bearing inthe blockH, must be free to turn in the bearing h, and have also a loose connection with the lever, so that it may slide in its bearings and give no lateral strain or unequal pressure of the parts in their bearings. The wrist-pin, therefore, in addition to its movement in a straight line, has also an oscillating motion in its bearinginthe block H.

To permit of the ready detachment of the parts from the piston-rod, so that it may be leftfree to move without carrying the lever-G with it, I divide the block H into two parts longitudinally through the hole or socket 'i, that receives the piston-rod, and then, by means of the hollow screw-threaded sleeve h and the hand-nut h on the outer end, I draw and hold the two parts together around the rod. The sleeve It also serves as a socket for the wrist-pin G. The screw-threaded portion k of the sleeve It works in the part H of the block or clamp; but the smooth portion, which extends through the remaining half or section of the clamp, is fitted loosely therein, so that the two parts may be separated and spread apart while still surrounding the rod. To hold these parts H H apart when the screw-sleeve is loosened, I place upon the frame, or some fixed point beneath and in line with the block H, a short pin, K, with a conical or tapering head, m, and a nut, l, for turning it by hand. The end of the pin, being screw-threaded and working in a bearing of like character, can he made longer or shorter, and its head. brought up to or away from thelowerside of the block H. Atapering hole, n,is made in the block between the jointof line of meetingof the parts H H in line with the pin K, so that when brought into position over the pin it will receive the head at when the pin is turned up or lengthened, which movement will force the conical head in between the parts H and separate them when the screw-sleeve is loosened. When thus separated the piston-rod will be left free to move through the block, while thelever and the parts will be held at rest and. locked by the pin K.

I also insure the attachment of the block Hto thepiston-rod when clamped together around it by forming a small groove, p, in the circumference of the piston-rod, into which a small )ro'ection on the inner side of the bore 1'.

s 7 as through the block is caused to fit, and thus prevent the rod from slipping through the block. When the parts are separated to release the piston-rod they will be spread apart by the pin K a sufficient distance to draw this projection out of the slot or groove q.

This construction and application is of especial value in pumps where the stroke of the piston is longer than the distance between the glands of the steam and the water cylinders. By openingthe clamps, as before described, the handle and its attachment are held rigidly in place and the piston is left free to make its full length of stroke.

One of the advantages obtained in the application of my improvement to a steam-pump is a shorter movement of the hand-lever as compared with the stroke of the piston-rod, which is due to the reciprocal motion of the right-angled bearingin the guides of the handlever and its oscillating motion in the pistonrod. When the lever is worked by hand the distance traveled by the body of the person is less than with an ordinary lever, as the handle or lever is worked in a much less space.

.Having thus fully described my invention, what I claim, and desire to secure by Letters Patent, is-

1. In combination with the pivoted oscillating lever (J and the reciprocating rod B, the right-an gle oscillating reciprocatingpin adapted to slide in one part and to oscillate in the other part, substantially as described.

2. In combination with the oscillating lever 0, having the bearings 60, and the clampingblock H, having the socket h, the right-angle oscillating reciprocating wrist-pin F G, arranged and applied substantially as described, to operate as set forth. 3. In combination with the oscillating reciprocating wrist-pin F G, held in hearings on the oscillating lever O, the clamp formed of the part or sections H and the hollow sleeve h, screw-threaded on its end, which holds the parts H together, and also forms the socket forthe pin, substantially as herein described.

4. The combination, with the oscillating lover, of the two-part clamp H, the screwthreaded sleeve h, the piston-rod B, with its groove q, and the projection on the inner surface of the clamp, substantially as and for the purpose described.

5. The combination of the oscillating lever with the two part clamp H, the screw-threaded sleeve h, the oscillating reciprocating wristpin F G, and the screw pin or wedge, substantially as and for the purposedescribe'd. 

